Getting out of his car is action enough.... Zimmerman isn't a cop and should have stayed his ass in his car.

I don't think so. I try to put myself in that situation in my neighborhood. If there have been breakins in my neighborhood and I call the cops I can see myself following the suspect so I can lead cops to him when they get hear rather then letting my disappear. Especially if I know I have a gun and the guy attacks me I can cap his ass.